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Waterfast dye fixative compositions for ink jet recording sheets

a technology of ink jet recording and composition, applied in the field of waterfast ink jet recording composition and sheet, can solve the problems of individual dye fixatives that are generally not suitable for all types of inks, have a tendency to run or bleed if they make contact with water, and are more difficult to pump and coat during the manufacturing process

Inactive Publication Date: 2009-02-26
GLOBAL HLDG II INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since most dye fixatives and most dyes or inks are water-soluble, even if the binder is water-insoluble, the dye, which forms a printed image on the paper, will still have a tendency to run or bleed if it makes contact with water.
The high molecular weight will also make the ink jet coating more viscous, and hence more difficult to pump and coat during the manufacturing process.
However, because ink jet printers use different inks, an individual dye fixative is generally not suitable for all types of inks.

Method used

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  • Waterfast dye fixative compositions for ink jet recording sheets
  • Waterfast dye fixative compositions for ink jet recording sheets
  • Waterfast dye fixative compositions for ink jet recording sheets

Examples

Experimental program
Comparison scheme
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example i

[0060]The print density and waterfastness of an ink jet recording sheet according to the present invention was tested. The specific formulation tested is set forth below in Table I. This example is of a size press formulation containing a blend of two dye fixatives and starch.

TABLE IFormulation of Dye Fixative Composition Used in Size PressQuantityConcentrationDry Weight RatioIngredient(g)(%)(%)Starch25.21025Fissatore L11.34450Sumachlor5.05025Water58.500Totals10010100Fissatore L is dicyandiamide-formaldehyde resin, CAS #26591-12-8 (Lamberti, SPA, Italy).Sumachlor is aluminum chlorohydrate, CAS # 12359-72-7 (Summit Research Labs, Flemington, NJ).

[0061]The starch used in this example was a Penford hydroxyethyl starch, designated PG-290, CAS#9005-27-0 (Penford Products, Cedar Rapids, Iowa). This starch was cooked in a starch cooker following the heating schedule recommended by the manufacturer at a concentration of 10% solids. The two dye fixatives, Fissatore L and Sumachlor, were rece...

example ii

[0064]

TABLE IIFormulation of Dye Fixative Composition Used in Size PressQuantityConcentrationDry Weight RatioIngredient(g)(%)(%)Starch20.21020Arquad DMCB-806.38050Sumachlor6.05030Water67.500Totals10010100Sumachlor is aluminum chlorohydrate, CAS # 12359-72-7 (Summit Research Labs, Flemington, NJ).Arquad DMCB-80 is benzyl cocoalkyl dimethyl quaternary ammonium chloride, CAS# 61789-71-7 (Akzo Nobel Chicago, IL).

[0065]The two dye fixatives, Arquad DMCB-80 and Sumachlor, were received from the manufacturers as solutions in water, with concentrations shown in Table I. These dye fixatives were added to tap water in the quantities shown in Table I. The percent solids of the solution was 10% in total solids, and the viscosity was less than 20 cps. Concentrated sodium hydroxide solution was then added to this solution while stirring to raise the pH to 7. This dye fixative mixture was then added to an equal quantity of cooked starch solution, also at 10% solids.

[0066]Sizing of paper with no ex...

example iii

[0067]

TABLE IIIFormulation of Dye Fixative Composition Used in Size PressQuantityConcentrationDry Weight RatioIngredient(g)(%)(%)Starch20.81021Nalco CP2619.44037Sumachlor8.35042Water61.500Totals10010100

[0068]The two dye fixatives, Nalco CP261 and Sumachlor, were received from the manufacturers as solutions in water, with concentrations shown in Table I. These dye fixatives were added to tap water in the quantities shown in Table I. The percent solids of the solution was 10% in total solids, and the viscosity was less than 20 cps. Concentrated sodium hydroxide solution was then added to this solution while stirring to raise the pH to 7. This dye fixative mixture was then added to an equal quantity of cooked starch solution, also at 10% solids.

[0069]Sizing of paper with no existing surface sizing was performed in the lab using the same conditions as described above in Example I. The paper was then printed and tested using the same conditions as described above in Example I. The print ...

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Abstract

A coating composition comprising a blend of at least two dye fixatives, at least one of which is a cationic polymer, and at least one of the other dye fixatives is a polyvalent metal salt, to form a water-insoluble complex. The ink recording sheets comprise a composition that is absorbed into the surface of the substrate as a sizing material, or alternatively, forms a continuous layer on the substrate. The present invention also encompasses methods for making the ink jet recording sheets.

Description

[0001]This application claims the benefit of U.S. Provisional Application Ser. No. 60 / 387,359 filed on Jun. 10, 2002, which is incorporated herein by reference.FIELD OF INVENTION[0002]The present invention relates to waterfast ink jet recording compositions and sheets. In particular it relates to coating compositions which are comprised of dye fixative blends which form water-insoluble complexes. These compositions are coated on at least one surface of a substrate to make an ink recording sheet. The coating composition is absorbed into the surface of the substrate as a sizing material, or alternatively, forms a continuous layer on the substrate.BACKGROUND OF INVENTION[0003]Ink jet coatings that are waterfast or waterproof are highly desirable in the ink jet printing industry. In general, there are two methods in the prior art for making an ink jet coating waterfast or waterproof. The first involves using a water-insoluble binder, such as a latex or a cross-linked polymer (e.g. cross...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B41M5/40C08G12/14C08G59/14C08G73/00C08B31/00C08F16/06C08F8/00C08G18/00B41M5/00B41M5/50B41M5/52
CPCB41M5/0011B41M5/508B41M5/52B41M5/5218B41M5/5281B41M5/5236B41M5/5245B41M5/5254B41M5/5227Y10T428/31681Y10T428/31692
Inventor KOENIG, MICHAEL F.
Owner GLOBAL HLDG II INC